The coupling of models is one way to realise simulation models. In that kind of modelling, there are three ways of managing the spatial dimension. The first is implicit, the second is dealing the space as a data and the third manages the landscape as a specific model. APILand is a JAVA object-oriented library conceived to manage dynamic landscape elements and so implement spatial simulation models in that last way. As in the GIS domain, the landscape model is defined as a set of overlapped layers. In the APILand approach, each element of a layer can be dynamic in structure and composition. At this point, three kinds of spatial links between external models have been used through APILand simulation experience: i) the sharing is used when models have the same definition of what is the landscape, ii) the translation is used when the landscape representation of a model comes from another representation and iii) the inclusion is used when two models have partially the same definition of what is the landscape. A coupling example of a farm management model to a carabid population model shows that managing the landscape as a specific model allows a lower dependency between external models, permits an easier reuse of a part of the model in different contexts and helps the expression of spatial pattern emergence.